Example sentences of "[conj] we have [prep] be careful " in BNC.

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1 The pace of change since the Second World War has been so swift that we have to be careful not to make assumptions about the past based on what we see around us every day .
2 It needs to be hot water , so we have to be careful .
3 And we have to be careful who we speak to . ’
4 ‘ Lithuania are a side who can cause us problems and we have to be careful .
5 But we have to be careful to try to understand what steps are proper in order to keep it at bay .
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